His dream is to be a doctor.5. 不定式作定语 不定式做定语通常要放在被修饰的词后。例如: I have a lot of work to do. So he made some candles to give light.6. 不定式作状语 1)目的状语 To… only to (仅仅为了),in order to,so as to,so(such)… as to… (如此…...